In 2011, Claiborne Farm celebrated 100 years in operation. Located in Paris, Ky., Claiborne won Eclipse Awards as leading breeder in 1979 and 1984 and has been the leading North American breeder by purse earnings 10 times. A.B. Hancock Sr. established the farm in the early 1900s, transferring his operation from Virginia. Seth has been at the helm of the family farm since 1972.

Through the decades, Claiborne has been home to such major stallions as Bold Ruler, Mr. Prospector, Nasrullah, Princequillo, Round Table, Danzig, and Seeking the Gold, as well as 1973 Triple Crown winner Secretariat.

Claiborne was the co-owner and co-breeder (along with longtime farm client and family friend Adele Dilschneider) of 2010 Breeders' Cup Classic (G1) winner Blame, who beat previously undefeated Zenyatta in the Classic but lost out to the mare in Horse of the Year voting. Blame was voted champion older male. Claiborne was also the owner and breeder of Swale, the 1984 Kentucky Derby winner.